chore: typecheck fix

packages/backend/package.json

@@ -15,7 +15,7 @@
 		"watch:swc": "swc src -d built -D -w",
 		"build:tsc": "tsc -p tsconfig.json && tsc-alias -p tsconfig.json",
 		"watch": "node watch.mjs",
-		"typecheck": "tsc --noEmit",
+		"typecheck": "pnpm --filter megalodon build && tsc --noEmit",
 		"eslint": "eslint --quiet \"src/**/*.ts\"",
 		"lint": "pnpm typecheck && pnpm eslint",
 		"jest": "cross-env NODE_ENV=test node --experimental-vm-modules --experimental-import-meta-resolve node_modules/jest/bin/jest.js --forceExit",